All in all it was the most elegant of solutions to the most intractable of problems. And it was reached in that most English of ways – over a cup of tea.

As the sound of discord over the royal wedding finally subsides, the decision that will today see Prince Charles escort his daughter-in-law down the aisle of St George's Chapel, Windsor, will be viewed as successfully pouring oil on troubled waters.

It came too late to amend the order of service, which still has Meghan being accompanied by her father Thomas Markle, but it was not too late for the royals to ensure that all's well that ends well.

Meghan Markle and her mother, Doria Ragland, arriving at Cliveden House Hotel this evening

Meghan and her mother's arrival at Cliveden House Hotel comes after the Palace announced that Prince Charles will walk Meghan down the aisle at tomorrow's wedding

Ever since Meghan's father began his will-he, won't-he routine about turning up from his Mexican bolthole, palace officials have been on red alert over who would take his place to give the bride away.

But such a delicate move required unanimous approval. So it was that no decision was taken until the arrival in Britain of the one person who was key – Meghan's mother Doria Ragland.

The bookies had installed her as favourite to do the honours. Already facing the most nerve-racking ordeal as mother of the bride she had no wish to add to the pressure.

RELATED ARTICLES

Share this article

So the family tea party Charles and the Duchess of Cornwall threw for Harry and Meghan and Doria at Clarence House on Wednesday afternoon was more than just exchanging pleasantries.

Harry had already sounded out his father about stepping into Mr Markle's shoes. But Charles wanted to be certain that this would receive the blessing of Miss Ragland.

I understand she was gracious in her assent. The prince also wanted to be certain that Miss Ragland did not wish to stand in for her ex-husband.

Meghan hopped out of a Royal Range Rover as she and her mother Doria Ragland arrived at Cliveden House Hotel, where they will spend the night together before the wedding

Doria Ragland in the Range Rover which took her from tea with the Queen at Windsor to the hotel this evening

For Meghan it was a thrilling moment when the man who this morning will become her father-in-law made his touching gesture. But there was still a twist, a sign that the wedding will have a very modern feel. Meghan will begin her walk up the aisle alone. Accompanied by her six bridesmaids and four pageboys, she will follow the Dean of Windsor up the length of the nave.

There, at the entrance to the quire, Prince Charles will be waiting to complete her journey to the altar. In fact this had always been Meghan's intention. Even if her father had been there, she wanted to walk the first part alone – a move being seen by some as a bold feminist gesture.

Intriguingly, royal officials were not demurring at this interpretation and added to it by pointedly avoiding saying that the prince would be giving her away, rather that he would 'accompany her'.

The distinction is significant in other ways too for there is no mention in the order of service – as there was when Kate Middleton married Prince William – of the traditional words where the priest asks, 'Who giveth this woman to be married to this man?'

Meghan was glowing as she smiled for waiting cameras at Cliveden House Hotel on the National Trust's Cliveden Estate where she will stay the night with her mother Doria Ragland who flew over from the US on Wednesday

Royal fans took pictures of Harry as he greeted crowds outside Windsor Castle this evening

In 2011 at Westminster Abbey the Archbishop of Canterbury received Kate's hand from her father Michael Middleton.

For the Prince of Wales the emotions will be bittersweet. It was once a dream of his to be a father of a bride giving away a daughter on her wedding day. Had his marriage to Diana survived and they had had the daughter Diana longed for it might have come to pass.

But today he will, uniquely perhaps for a father of boys, find himself giving away a bride for the second time. Two years ago he accepted the honour to give away Alexandra Knatchbull in the place of her father and his childhood, friend Lord Brabourne, who was not well enough to carry out the role himself.

At the time it raised eyebrows but it was left to the vicar who conducted the service at Romsey Abbey to point out that Charles was, in fact, 'family'. A cousin through his father Prince Philip, he had also been best man at Brabourne's wedding.

The links between the family run deep, not least because of the murder of Brabourne's grandfather Earl Mountbatten, who was a powerful mentor for the prince.

Drawing these strands together, Charles became the most obvious figure to step in today.

Meghan said she felt 'wonderful' as she arrived at the hotel where she will spend her final night before the royal wedding

Meghan Markle and her mother Doria Ragland leave the Windsor Estate after tea with the Queen

Friends said yesterday that he was 'genuinely affected' to have been asked. 'He considers it a great honour and he is proud to do it,' said one of his circle. 'He feels that Harry and Meghan are entrusting him with something special.'

Of course, Harry might have asked his brother to take on the responsibility were it not for the fact that William will be alongside him at the altar as best man.

Indeed, switching William might have meant a last-minute call-up for one of his friends into the role of 'supporter', as the royals refer to their best man. Harry could, conceivably, also have asked either of his uncles, Prince Andrew or Prince Edward, but that would have raised yet more eyebrows.

In the end it was the example of his grandfather, the Duke of Edinburgh, he chose to follow. Fifty-eight years ago this month, Prince Philip walked his sister-in-law, Princess Margaret, down the aisle at her wedding to Lord Snowdon.

Some inevitably will wonder why it is the Windsor side of the family and not the Markles taking on this duty for the bride. With her mother the only member of her family attending, Meghan could have turned to one of her male friends.

Meghan waved at royal fans while her mother Doria Ragland smiled at Cliveden House Hotel this evening

Canadian Markus Anderson was tipped for a role. As a membership director at the exclusive private members' club Soho House, on whose premises the couple met in the early days of their romance, he has been a close confidante of Meghan.

It was the sheer enormity of the occasion that persuaded the couple that whatever the merits of her circle, Charles was the ideal choice. 'Meghan's dad would have been extremely nervous but the prince will be enormously reassuring,' says a courtier.

'Meghan would probably have been propping Tom Markle up but now it will be Charles who will be strong at her side.'

After all the setbacks and family rancour of the past few days, there will now be an air of calm about the ceremony.

More than anything, however, Charles's presence at Meghan's side will not just be a symbolic welcome into the Royal Family, it will prove that the royals believe she is the right person to be marrying the prince's son.